It currently says: "You promise to keep the premises in a neat and sanitary condition and to immediately reimburse the landlord for any sums necessary to repair any item, fixture, or appurtenance that needed service due to your, or your invitee, misuse or negligence. 

On this list are hedge funds and guys that are flipping 20 properties at a time with deep pockets who commonly buy stuff sight unseen within 5 minutes of looking at the pics and running some back of the napkin numbers.

Just make sure you are comfortable with the projected rents in the area and have at least an inkling of a backup strategy...for example if you are going to be renting it out as a standard long term rental, if you needed to perhaps go section 8 or go with travel nurse housing....would the numbers still napkin out in that case? 

It’s simply a lazy/back of the napkin way for people to do an evaluation on a property they are looking at.

. $3.5kDebt-to-income concerns:Time for some napkin math for a concern that makes me worry whether this goal is actually possible...Assuming all goes as planned, I worry about eventually hitting a wall where I'm unable to qualify for new mortgages at a certain point due to how the investment properties' mortgages will affect my debt-to-income ratio. 

Upon letting pest control into their apartment that Monday, I discovered that their unit was not kept in sanitary conditions.

Also are you tying in to existing Storm Drain and sanitary sewer or are you putting in septic tanks and leach fields? 

My back-of-the-napkin rehab estimate is as follows:Drywall: $20,000Flooring: $18,500Windows: $17,000Bathrooms: $16,000Roof: $12,000Siding: $10,000Paint: $9,000Cabinets: $8,500Appliances: $8,000HVAC: $7,000Doors: $5,000Counters: $4,000Contingency: $15,000Total: $150,000Obviously, there are wayyy too many unknowns to accurately estimate rehab off of just a few pictures (e.g., what's the status of plumbing, electrical, any structural issues, etc.). 

Start with some simple back of the napkin math: 54 pads times $275 per month, times 12 months gives you a gross rent of $178,200.

Best back of the napkin math out there.